JPS6069599U

JPS6069599U - AC motor control device

Info

Publication number: JPS6069599U
Application number: JP16229483U
Authority: JP
Inventors: 神藤　富雄
Original assignee: 日産自動車株式会社
Priority date: 1983-10-20
Filing date: 1983-10-20
Publication date: 1985-05-17

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来の交流モータの制御装置の構成を　　゛示
すブロック図、第２図は第１図のＰＷＭ回路のより詳細
な構成を示すブロック図、第３図は本考案に係る交流モ
ータの制御装置の一実施例の構成を示すブロック図、第
４図は第３図のＰＷＭ回路のより詳細な構成を示すブロ
ック図、第５図は同ＰＷＭ回路における主要人出力波形
を示す図で、第６゛図は本考案の他の実施例におけるＰ
ＷＭ回路の主要人出力を示す波形図である。１・・・・・・トルク指令器、２・・・・・・マイクロ
コンピュータ、３・・・・・・電流制御回路、５・・・
・・・ドライバ回路、６・・・・・・インバータ、７・
・曲交流モータ、１゜・・・・・・タコジェネレータ、
１１・・・・・・カウンタ、１４・・・・・・ＰＷＭ回
路、４１．ｕ〜４１ｗ・・・・・・コンパレータ、４２
・・・・・・三角波発生器、４３・・・・・・定電圧発
生器、４４・・・・・・多入力ＯＲ回路、４７・・・・
・・遅延回路。Figure 1 is a block diagram showing the configuration of a conventional AC motor control device, Figure 2 is a block diagram showing a more detailed configuration of the PWM circuit in Figure 1, and Figure 3 is a block diagram showing the configuration of a conventional AC motor control device. FIG. 4 is a block diagram showing the configuration of an embodiment of the control device, FIG. 4 is a block diagram showing a more detailed configuration of the PWM circuit in FIG. 3, and FIG. 5 is a diagram showing main output waveforms in the PWM circuit. Figure 6 shows P in another embodiment of the present invention.
FIG. 3 is a waveform diagram showing main outputs of the WM circuit. 1...Torque command device, 2...Microcomputer, 3...Current control circuit, 5...
...Driver circuit, 6...Inverter, 7.
・Turn AC motor, 1°... Tacho generator,
11...Counter, 14...PWM circuit, 41. u~41w...Comparator, 42
... Triangular wave generator, 43 ... Constant voltage generator, 44 ... Multi-input OR circuit, 47 ...
...Delay circuit.

Claims

[Claims for Utility Model Registration] An AC motor that converts a current command value signal applied to the AC motor into pulses using a pulse width modulator, and drives a power converter based on the pulse signal to control the current applied to the AC motor. The control device includes; a motor stop detection means for detecting whether the AC motor is in a stopped state; and a motor rotation detection means for detecting whether the AC motor is in a rotating state; The width modulator includes a triangular wave generator: a comparator that compares the current command value signal and the triangular wave and outputs a pulse signal; and when the motor stop is detected, the amplitude of the triangular wave is changed to motor rotation. control of an AC motor, comprising: an amplitude controller that causes the amplitude to be larger than a reference amplitude at a time, and returns to the reference amplitude after a predetermined transition time when the motor rotation is detected thereafter; Device.